A low, fan shaped sloping mass of outspreading loose rock
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Category: <span>A</span>
An isometric mineral of the zeolite group, 16[Na(H2O)(AlSi2O6)]
Deposits of sedimentary material transported from their source, most notably influenced by erosional forces and gravity
A cavity or vesicle formed by the presence of trapped gas, in igneous rock, that is filled with such secondary minerals as calcite, quartz, chalcedony, or zeolites
Two or more metals together in a compound
Containing amygdules. See Amygdule
A mineral group including actinolite, anthophyllite, arfvedsonite, cummingtonite, hornblende, richterite, glaucophane, grunerite, anthophyllite, riebeckite, tremolite, and others
The gradual and systematic reduction of a balance in an account over an assigned period
A folding or arching of layered rock
Coal containing a low percentage of volatile matter and having a high percentage of fixed carbon